Pre requisite: Valence bond theory.

Crystal Field Theory- important postulates, crystal field splitting of d-orbitals in octahedral and tetrahedral complexes, factors affecting the magnitude of  Δ_0, calculation of crystal field stabilization energy; strong and weak ligands, spectrochemical series; distribution of d-electrons in t_2g and e_g orbitals in octahedral and tetrahedral complexes. 

Distortion of octahedral complexes, crystal field splitting of d-orbitals in square planar complexes and Jahn Teller theorem; use of CFSE values, number of unpaired electrons and high spin (HS) and low spin (LS) complexes, applications and limitations of CFT.

Pre requisite: Types of magnetism.              

Types of magnetic behaviour, methods of determining magnetic susceptibility, spin only formula, correlation of μ_s and μ_eff values; orbital contribution to magnetic moments, applications of magnetic moment data for 3d-complexes.

Types of electronic transitions; coupling of orbital angular momenta and spin angular momenta (in p² and d² configuration), spin orbit coupling/LS coupling, determining the ground state terms – Hund’s rule, hole formulation, calculation of the number of micro states; selection rules- Laporte ‘orbital’ selection rule, spin selection rule, spectroscopic ground states; Orgel energy level diagram for d¹&d⁹ states, discussion of electronic spectrum of [Ti(H₂O)₆]⁺³ complex.

Definition of stability, stepwise and overall formation constants, kinetic v/s thermodynamic stability, labile and inert complexes, factors affecting the stability of complexes, trans-effect, theories and its uses, mechanism of substitution reactions in square planar complexes, trans-effect, theories of trans-effect and its uses.